Get the app
Best time to visit · Arizona, United States
On the climate data, the best time to visit Phoenix is November – April, scoring up to 99/100 with highs around 78°F (26°C) and 0.8 in (21 mm) of rain in March. The toughest months are July – September, mainly because of heat.
These averages also cover Downtown Phoenix.
Highs run from 66°F to 107°F across the year, and the yearly total is about 10.0 in (254 mm) of rain.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high | 67°F20°C | 70°F21°C | 78°F26°C | 86°F30°C | 96°F36°C | 107°F42°C | 107°F42°C | 105°F41°C | 101°F38°C | 90°F32°C | 77°F25°C | 66°F19°C |
| Avg low | 42°F6°C | 44°F7°C | 50°F10°C | 56°F13°C | 65°F19°C | 76°F24°C | 83°F28°C | 81°F27°C | 75°F24°C | 63°F17°C | 51°F11°C | 42°F5°C |
| Rain | 1.3 in33 mm | 1.3 in32 mm | 0.8 in21 mm | 0.3 in8 mm | 0.2 in6 mm | 0.1 in2 mm | 1.3 in33 mm | 1.3 in33 mm | 0.9 in22 mm | 0.6 in14 mm | 0.7 in19 mm | 1.2 in31 mm |
| Humidity | 46% | 44% | 38% | 29% | 22% | 15% | 30% | 35% | 31% | 30% | 34% | 45% |
| Cloud | 40% | 40% | 34% | 28% | 22% | 17% | 43% | 38% | 25% | 24% | 32% | 41% |
| Comfort | 97 | 97 | 99 | 88 | 66 | 60 | 56 | 57 | 60 | 80 | 99 | 96 |
Source: NASA POWER (public domain), 2001–2025 monthly averages on a ~50 km satellite and reanalysis grid, so coasts and valleys can differ from what's shown. Temperatures were adjusted from the grid cell's ~494 m (1,621 ft) to Phoenix's ~331 m (1,086 ft) elevation using the standard lapse rate of 6.5°C per 1,000 m. Precipitation includes snow as melted water; daylight is calculated from latitude. Check a forecast before you go.
The coldest season, with highs of 66–70°F (19–21°C) and lows down to 42°F (5°C). It's the wettest season, with about 3.8 in (96 mm) of rain, 38% of the year's total. December – February are among the best-scoring months (season average 97/100).
Temperatures climb through the season, from 78°F highs in March to 96°F by May. It's the driest season, with only about 1.4 in (35 mm) of rain, 14% of the year's total. Lows bottom out around 50°F (10°C). Comfort peaks here: March & April rank with the year's best, and the season averages 84/100.
Peak warmth: highs of 105–107°F (41–42°C). About 2.7 in (68 mm) of rain falls across these months, 27% of the year's total. Lows bottom out around 76°F (24°C). It holds the toughest stretch on our comfort score (July & August), averaging 58/100.
Temperatures slide from 101°F highs in September to 77°F by November. About 2.2 in (55 mm) of rain falls across these months, 22% of the year's total. Lows bottom out around 51°F (11°C). Comfort peaks here: November ranks with the year's best, and the season averages 80/100.
By comfort score: 7 Great, 3 Good and 2 Fair. Great months: October – April. Tap a month for its own guide.
On the climate data, the best time to visit Phoenix is November – April, scoring up to 99/100 with highs around 78°F (26°C) and 0.8 in (21 mm) of rain in March. The toughest months are July – September, mainly because of heat.
January is the wettest month, averaging about 1.3 in (33 mm) of rain. June is the driest, with less than 0.1 in (3 mm). The yearly total is around 10.0 in (254 mm).
December is the coldest, with average lows of 42°F (5°C) and highs of 66°F (19°C). The warmest is July, with average highs of 107°F (42°C).
Not very: summer (June – August) humidity averages 27%, and highs peak around 107°F (42°C), so heat matters more than mugginess.
The wettest three-month stretch is December – February, with about 3.8 in (96 mm) of rain combined. The driest stretch is April – June, with about 0.6 in (16 mm).
Share this with your crew, run a quick poll on dates in TripsCircle, then build the itinerary, packing list and shared costs in one place.
